Guidance, Navigation, Controls; GNC Engineer

TSC is seeking a remote based Guidance, Navigation, Controls (GNC) Engineer that will design, integrate, test, and deliver flight control systems or mission‑critical onboard software for unmanned aerial systems (UAS). The ideal candidate will have experience in UAS Guidance, Navigation, & Control (GNC) utilizing inertial navigation, vision, collision avoidance, commercial autopilots, redundancy management and path planning architecture. The GNC Engineer will participate hands‑on in the full software life cycle, from concept through implementation, integration to flight test and operational release.

This position in onsite based in Crystal City, VA with up to 25% travel required.

• Work on a team to develop, modify and tune guidance and control systems for fixed wing aircraft
• Work on a team to develop, modify and tune navigation systems based on sensor fusion of 6‑DOF IMU, magnetometer, GNSS, pressure and ranging sensors.
• Work on a team to develop and modify 6‑DOF and Hardware‑in‑the‑Loop simulation environments
• Simulation, analysis, control, and testing on 6 degree‑of‑freedom (6‑DOF) motion platform for development and validation of autonomous UAS.
• Work on a team to design and develop flight or mission‑critical onboard software for unmanned systems
• Aid development for unmanned aerospace includes guidance, navigation & control, mission sequencing, payload control, redundancy and contingency management, uplink and downlink packet encoding and decoding, converting between different serial protocols, hardware‑in‑the‑loop simulation, ground‑based GUIs, and aircraft subsystem control (i.e., payload, electrical systems)
• Embedded Software development (C/C++, Python, shell scripts)

• Use development tools such as: JIRA, git, C/C++, CMake, Linux, MATLAB
• Collaborate with a multi‑disciplinary software team on large, multi‑language projects
• Participate in code reviews, Flight Testing, and Customer Presentations
• Bench test, Hardware‑in‑the‑loop, and field testing of UAS platforms
• Local, interstate, and international travel to support field testing and customer demonstrations. Expected travel is ~10-25%.
• Collaborate with other engineering disciplines (Systems, Software, Mechanical, Electrical) in planning, design and development of systems to ensure software and hardware performance and compatibility
• Design software architecture, interfaces, and gateways for communication with external Autonomy software services. Implement functionality using a model‑based approach.
• Software verification and validation including writing Test Cases and Test Procedures
• Develop, implement, and document data and software application test plans to validate project deliverables meet quality standards
• Oversee and support processes and procedures for existing data and reporting activities to support internal and external customer deliverables.
• Examples of specific deliverables include but are not limited to: recurring reports and analyses; data validation and documentation
• Interface and derive solutions in coordination with hardware design teams

• BS degree in Mechanical, Electrical, Computer, Aerospace, Controls engineering or other relevant discipline, plus at minimum 5 years of experience in a professional environment developing MATLAB / Simulink control systems with auto code experience; or MS in Controls or Aerospace Engineering plus 2 years' experience. Embedded code experience preferred.
• US Citizenship and the ability to obtain and maintain a DoD Security Clearance
• Experience in developing physics based 6 DOF simulations, motion platforms.
• Experience developing with:
  Gazebo or similar simulation tools, MatlabMATLAB/Simulink, C, C++, Python
• Experience developing scripts to run batch processes
• Experience in data post processing from simulation or flight testing, report summary writing
• Experience developing guidance and autonomy algorithms required; in denied environments preferred

Minimum two years of demonstrated, hands‑on professional experience in at least one (ideally a…